能实现GPS伪距单点定位，包括文件的读写、误差改正、卫星位置、钟差的计算，以及最终伪距定位的实现。误差在10m以内,Can achieve single-point pseudorange GPS positioning, including reading and writing files, error correction, satellite position, clock bad calculation, and finally achieve pseudorange position

利用广播星历进行伪距单点定位的小程序，定位精度为米级。-Of pseudorange point positioning using a small program to broadcast ephemeris, the positioning accuracy of meter level.